Check Valve Usage

jparr

Well-known member
Jun 12, 2010
65
I am replumbing my equipment pad, and had planned on placing a check valve before the pump. On occasion when pumping my DE filter, DE will flush back in to the pump basket. The only check valves I was able to find were spring loaded, solid body. Should I use these, or just skip the check valve altogether? The pump basket cover will be just about 1/2" lower than the level of the pool water.
 
G

Guest

See if you can find the Jandy Swing Check Valves. They have the same footprint as all the other Jandy valves, but have a clear top so you can see the check valve portion when it is flowing.

I like to take the springs out and let the valve close by water pressure, as opposed to having them have to fight the spring to open.
 

duraleigh

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Apr 1, 2007
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If I understand your application, I would consider simply installing a shut-off valve. Cheaper than the check valve and more reliable....check valves are always a potential problem asource and shut-off valves seldom are.
 

waste

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Mar 29, 2007
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C'mon guys! :roll:

The only check valve you need to install is the one IN the filter!

In the pipe that comes from the pump into the bottom of the filter there is a flapper valve - yours is probably missing. The part # is ECX- 407781. It's accessible without opening up the filter tank and is quick and easy to do :)

If you want to tackle this yourself, I'll help walk you through it (** however, I'm in the midst of moving and can't guarantee a 1 day answer - but since I've now told you what the problem is, I'm sure someone else will step up, should I fail to respond in a timely manner :cool: )

I think they cost ~ $10.
 

duraleigh

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In the pipe that comes from the pump into the bottom of the filter there is a flapper valve
Is that in all DE filters? If so, I have never known that. There has never been one in my sand filter.....should there have been? How about cartridge?
 

waste

TFP Expert
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Mar 29, 2007
4,160
Coastalish 'down easter'
Dave, this is only for the Hayward "EC" filters. ( I imagine that the other 'bump style' filters are the same)

As opposed to sand or cart filters, DE filters are 'bottom fed' with dirty pool water.
 

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